Purpose To evaluate the eicacy of the Instability Severity Index Score (ISIS) in predicting an increased recurrence risk after an arthroscopic Bankart repair. Methods Retrospective review of a cohort of patients operated in three diferent centres. The inclusion criteria (recurrent anterior instability [dislocation or subluxation] with or without hyperlaxity, arthroscopic Bankart repair) and the exclusion criteria (concomitant rotator cuf lesion, acute irst-time dislocation, surgery after a previous anterior stabilization, surgery for an unstable shoulder without true dislocation or subluxation; multidirectional instability) were those used in the study that deined the ISIS score. The medical records and a telephone interview were used to identify the six variables that deine the ISIS and identify recurrences. Results One hundred and sixty-three shoulders met the inclusion and exclusion criteria. Of these, 140 subjects (22 females/118 males; mean age 35.5 ± 7.9) with 142 (89.0%) shoulders were available for follow-up after 5.3 (1.1) (range 3.1-7.4) years. There were 20 recurrences (14.1%). The mean (SD) preoperative ISIS was 1.8 (1.6) in the patients without recurrence and 1.8 (1.9) in the patients with recurrence (n.s.). In the 117 subjects with ISIS between 0 and 3 the recurrence rate was 12.8%; in the 25 with ISIS 4 to 6 the rate was 20% (n.s.). Conclusion For subjects with anterior shoulder instability in which an arthroscopic Bankart repair is being considered, the use of the ISIS, when the values obtained are ≤ 6 was not useful to predict an increased recurrence risk in the midterm in this retrospectively evaluated case series. The eicacy of the ISIS score in deining a group of subjects with a preoperative increased risk of recurrence after an arthroscopic Bankart instability repair is limited in lower risk populations (with ISIS scores ≤ 6). Level of evidence Retrospective case series, Level IV.

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r e v e s p a r t r o s c c i r a r t i c u l . 2 0 1 5;2 2(1):18-23 información del artículo Historia del artículo: Recibido el 26 de enero de 2015 Aceptado el 20 de junio de 2015 On-line el 9 de julio de 2015 Palabras clave: Acromioclavicular Luxación Epidemiología Clasificación Tratamiento r e s u m e nLas luxaciones acromioclaviculares son lesiones frecuentes que afectan a la cintura escapular, sobre todo en pacientes jóvenes, varones y durante la práctica deportiva. Existe un consenso generalizado para realizar tratamiento conservador en las lesiones leves (i y ii de Rockwood) y tratamiento quirúrgico en las más graves (iv, v y vi de Rockwood). El tratamiento de las lesiones de tipo iii de Rockwood sigue siendo controvertido debido a la falta de evidencia científica que apoye una opción terapéutica óptima dada la heterogeneidad existente en la literatura al respecto, aunque los pacientes jóvenes y con alta demanda física podrían beneficiarse ligeramente del tratamiento quirúrgico. Este artículo de revisión tiene como objetivo exponer la epidemiología, los mecanismos de producción, la clasificación, la historia natural y las indicaciones de cirugía de las luxaciones acromioclaviculares para favorecer un mejor conocimiento de las mismas que permita obtener un resultado óptimo tras su tratamiento. EpidemiologyClassification Treatment a b s t r a c t Acromioclavicular dislocations are common injuries of the scapular girdle, especially among young men during sport activities. There is general consensus for non-surgical treatment of Rockwood type i and ii injuries and for surgical treatment of Rockwood type iv, v, vi injuries.Treatment of Rockwood type iii injuries remains controversial because of the lack of evidence that supports best treatment option due to mixed results reported in the literature, although young patients with high physical demand may have a slight advantage with a surgical * Autor para correspondencia.Correo electrónico: santosmoros@maz.es (S. Moros Marco). http://dx.

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